Vacuum-walled container



F. SIEGHEIM VACUUM WALLED CONTAINER May 27, 1930.

Filed June 25, 1928 INVENTOR if S heil M uw M M ATTORN EYS May 27, 1930.

F. SIEGHEIM VACUUM WALLED CONTAINER Filed June 23, 1928 Z'Sheets-Sheet 2Patented May 27, 1930 FRITZ SIEGHEIM, F NEW YORK, N. Y.

i vAcUuM-*WALLRD CONTAINER Application filed` .Iune 23,

' In the manufacture ofdouble walled glass vessels it is difficult toform the surface of the blown glass at the end of the neck in a trueplane at right angles to `the axis of the d vessel., whereby it may seatagainst and form a liquid-tight joint with a lip or outlet part of aprojecting jacket or casing. Iven if the surface be perfectly formed itoften happens that in assembling the vessel and its jacket, the partsare not properly registered or the vessel is yieldingly supported in thecasing so that the desired tight joint is not insured.

If this tight joint is not formed' and maintained, a small portion ofthe liquid being poured into or out of the vessel may leak into thespace between the vessel and the casing. Dish water may also get intosaid space during thewashing of the vessel as it is not 20 the usualpractice to separate the vessel from its jacket each time the vessel iswashed.

As the same vessel may be used with different liquids, such as, coffee,chocolate, etc., at different times, on the inner surface of the casinga very unpalatable and even toxic liquid mixture may accumulate in thisspace, and portions of it iow out with the potable liquid as the latteris being poured out of the vesselv for use. I-Iighly objectionablecontamination of the potable liquid thus occurs.

The use of rubber or other yielding gasket between the parts to preventthe leakage referred to is not entirely satisfactory as the gasket soonloses its efficiency due to the widely varying conditions, particularlyas to temperature, to which it is subjected.

The end of the vessel mouth is subjected to the greatest heat variationsbecause of its exposure to the air and its conducting rela tionship tothe acket or casing. This is the portion ofthe Vvessel where fusing ofthe glass usually occurs in forming the vessel and therefore there maybe internal strains in the glass increasing the liability of breakage.Unless this edge portion is protected it is liable to breakage uponpouring in very hot or cold liquids or in handling. Ifsuch protectingmeans extend inwardly beyondthe 50 inner surface of the vessel mouthitis diicult and as there may be rust j to clean beneath the edge thereof,and solids collecting in this groove, channel or recess will contaminatethe contents of the vessel during the pouring out of the contents.

The 1n ain obj ect of my invention is to provide a construction wherebythe formmr of a tight joint between the vesselA mouth and the rim of thejacket or casing is insured and which at the same time permits of readyseparation and accurate reassembling.

A further object is to provide a double metal protecting wall at themouth of the Vessel and which at the same time in combination with thevessel itself presents a subj stantially straight inner surfacewhichpresents no readily cleaned.

groove or recess which cannot be In carrying out my invention I providea glass vessel with a permanently attached y metal top presenting a trueplane surface which may be directly abutted against a correspondingmetal surface of the outer casingl to provide a liquid-tight joint orseal.

As a further feature I provide for use in combination with these twoplane metal abutting surfaces a threaded connection between the vesselaccurate and the outer jacket whereby the centering or aligning of theparts together of the abutand reassembli ng of As a further feature Iform the plane abutting surface and the connecting threads on a singleannular metal member which is in the form of a ring permanently attachedto and encircling the mouth of the glass vessel. Although this featureis important it is not essential as the abutting surface may be formedon one member at the mouth of the bottle and the threads formed on aseparate member adjacent to the mouth or encircling the body portion ofthe vessel.

As a further feature I entirely enclose the glass vessel in a sheetmetal casing formed of two parts permanently connected together.

Thus the vessel may, dependent of the outer jacket and `if desired, beused inwill be protected durinof Ordinar ,handlinm 'Lealc b y D age`intor the space between thisv innerY casing facilitated, and the me iand the glass wall may be insured by the use of cement, and the end ofthe casing itself may present the plane metal abutting surface forcontact with an opposed surface of an inner jacket. This featurealthough desirable is not essential so far as certain of the otherfeatures of my invention are concerned as this inner jacket might beomitted and the metal collar with its abutting surface and its screwthreads directly cemented to the vessel around the mouth thereof.

In the accompanying drawings I have illustrated certain embodiments ofmy invention.

In these drawings:

Fig. 1 is a central lon through a container embo tion; and

Fi s. 2, 3, 4, and 5 are sectional details of ot er forms.

In the construction illustrated in Fig. l there is employed a glassvessel having inner and outer walls and 11 forming a body portion and aneck. The walls are sealed together and the space therebetween isevacuated so as to provide the usual vacuum walled vessel.

In the making of such vessels the inner and outer walls are usuallyfused together at or near the lip or outer end 12 of the neck and theforming of this lip or end surface in a true plane at right angles tothe axis of the vessel is often a rather difficult matter.

n the construction illustrated the glass vessel is provided with aninner metal casing including upper and lower parts 13 and 14 permanentlysecured together by spinning an edge of one over a flange of the otheror by soldering or in any other suitable manner` The walls of thiscasing are spaced from the outer glass .wall 11 except at the upper endof the neck and along a comparatively small portion of the bottom.

The Casin is provided with a depending annular bea 15 at its lower endwhich holds the main portion of the bottom above the supporting surfaceand inside of this bead there is a concave bottom portion 16 for directengagement with the bottom of the outer gla wall 11. The bead 15 formsan inner annular roove which may receive the projection 1 where thesealing off is eil'ected after forming the vacuum.

he upper end of the upper casing has an inwardly extending annularflange 18 which presents a true upper metal surface and may or may notdirectly contact with the lip or surface portion 12. he s ace betweenthe flange 18 and the lip 12 is lled with a suitable cementv 19 whichwill form a watertight joint therebetween and which will not Vaffectedby changes in temperature or by contact with hot liquids.

"If the lip 12 be substantially true very little cement will berequired, the cement itudinal section ying my invenonly serving to takecare of irregularities between the metal surface and the glass surface.

The parts should be held together so that there is a snug lit at thispoint at all times and irrespective of expansion or contraction of themetal.

The dished bottom 16 of the casing is sufficient to take care of anymovement due to the different coefficients of expansion of the glass andmetal and without subjecting the glass to undue strain or bending thecemented joint.

The inner casing is mounted within an outer jacket or casing which maybe in the form of a pitcher provided with a handle 20, a cover 21 and apouring spout or lip 22. This jacket is formed of two sections 23 and 24which are detachably secured together in any suitable manner as forinstance by screw threads 25. This jacket is preferably of somewhatthicker metal than the inner casing 18, which latter may be ofcomparatively thin stock. The jacketmay be silver plated, decorated ortreated in any suitable manner to give an attractive or ornamentalappearance.

This outer casing has an inwardly extending annular flange or top 26 andit is important that the inner vessel make a tight joint with thisflange without the use of gaskets or tapered seats. It is also importantthat the vessel be held firmly against the flange at all times when thevessel is in use or ready for use.

In order to accomplish this object I provide, in the construction shownin Fig. 1, a collar 27 which has a cylindrical portion soldered on tothe outer surface of the neck of the metal casing 13, and a horizontalflange cxtending inwardly at the upper end. This flange has a planeupper surface which may be forced against the plane under surface of theflange 16.

The outer acket 23 has a depending flange 28 rigid with the top wall orflange 26 and depending therefrom, and internally threaded. The exteriorof the collar is similarly threaded so that by extending the vessel withits casing 13 into the outer jacket and screwing the parts together, thedesired tight joint will be formed.

The internal diameters of the flange 26 and of the collar 27 aresubstantially the same and such that they project inwardly over the topof the glass vessel, but not so to leave any groove or grooves withinwhich solid material may collect or into which liquid may enter.

After the inner vessel has been inserted and secured in place the bottom24 of the outer jacket may be attached by the screw threads 25.Preferably this outer jacket is spaced from the annular bead 15 on thebottom of the inner casing.

In the construction shown in Fig.` 1 it is not important that the flange1S be employed as this flange may be omitted and theparts soproportioned that the inner 'surfaceof the collar 27 comes closelyadjacent to the glass lip 12 and any remaining space be filled by thecement 19. What is important is that the glass vessel have ametal partat the mouth which presents a true horizontal surface which may beforced against a truehorizontal surface `of the acket by means of screwthreads.

In Fig. 2 I have shown a construction in which the collar 27 `and thedepending iiange are used the same as in Fig. 1i, but in which thecollar is directly cemented tothe glass and the upper half 13 of thecasing is omitted. The lower half 14 of thel casing is usedsubstantially the same as in Fig. 1, except that it is cemented to thebody of the glass vessel at approximately the point of maximum diameter.This lower casing half serves to reinforce and strengthen the glassvessel, protect the bottom, and permit the vessel to stand upright whenremoved from the acket. If these advantages are not desired the metal icasing partld may be omitted.

In Fig. 3 I have shown a construction similar to Fig. 1, but in whichthe collar 27 and flange 2S are omitted. The flange 18 of the metalcasing abuts directly against the top wall or flange 26. The threads forholding the metal surfaces of the parts 18 and 26 together are disposedaround the body of the vessel instead of around the neck. The lowercasing part 14 is provided with screw threads intermediate of its endswhich may engage with the inner side of the threaded part 25 of theupper jacket part 23. After these parts have been screwed together thelower part 24: of the jacket may be screwed onto the outer side of thepart 23 on the same screw threads.

In Fig. 4t I have illustrated a construction which embodies the samebroad invention and the same parts, but combined in a little differentmanner. The upper half 13 of the inner casing is omitted and the collar27 is directly cemented to the glass as in Fig. 2, but the threads onthe collar and the flange 28 are omitted. The lower half 11i of theinner casing is cemented to the lower half of the glass vessel as inFig. 2, but is provided with threads at its upper end for engaging thethreads of the cuter j acketas in Fig. 3.

Althought it is preferable that the inner vessel be held in place byscrew threads, the type of lower half 1li of the inner casing which Ihave illustrated is capable of use in a construction in which no suchscrew threads are employed. rIhe bead 15 of this lower casing halfserves as a support for the glass vessel so that the latter will standup in spiteof the rounded character of the bottom of the glass vesselitself. The portion which engages the supporting surface, namely, the

bead 15, is spaced away from the glass so that if it be dented or struckagainst the supporting surface there will be no liability of breakingthe glass. The portion which engages the bottom of the glass vessel isabove the lower edge of the bead 15 so that it isprotected and the beadserves to protect the projecting sealing off point 17 ofthe glassvessel.

In Fig. 5 I have shown a form in which this lower casing part isemployed and the vessel is held in place by a rubber pad 8O and a coilspring 31. In separating the two parts of the outer jacket there is no`possibility of the spring or pad striking against the sealing edprojection 17 and breaking it as is the case in certain commercialconstructions in which there is no part corresponding to the lowersections 14; of the inner casing.

The lower casing part 14 serves to reinforce and protect the bottom ofthe glass vessel, protect the sealing olf point, and permit the innervessel to stand upright when removed from the jacket, but it also, byits engagement in the concave side of the pad 30, centersithe vessel togive a proper seat at its neck. It also distributes the pressure of thespring to `a wider area of the vessel.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is: l.

1. A heat insulated container having an outer metal jacket formed of twoseparable sections, one of said sections being provided with an annularinwardly extending flange presenting a plane transverse inner surface, adouble walled glass vessel having an annular metal part secured to theneck thereof presenting an upper plane transverse surface adapted todirectly abutagainst the first mentioned lsurface to form a tight joint,and means for rigidly securing the vesselwithin the jacket to the firstmentioned section of said jacket with said surfaces in firm contact andindependent of the other section.

2. A heat insulated container having an outer metal jacket provided withan annular inwardly extending flange` presenting a plane transverseinner surface, a double walled glass vessel havingian annular metal partat the neck thereof presenting an upper plane transverse surfaceadaptedto directly abut against the first mentioned surface to form atight joint, and screw threaded connections between said vessel and saidcasing for holding said surfaces in firm engagement.

3. A heat insulated container having an outer metal jacket provided withan annular inwardly extending flange presenting a plane transverse innersurface,- a double walled glass vessel having an annular `metal part atthe neck thereof presenting an upper` plane transverse surface adaptedto directly abut against the first mentioned 'surface to `form a tightjoint, said flange and part having substantially the same internaldiameters approximating, but not smaller than the internal diameter ofthe neck of the vessel, and screw threaded connections between saidvessel and said casing for holding said surfaces in firm a ment.

k gAe container including a jacket having an inwardly extending annularflange at the top and a depending cylindrical flange carried by said topand spaced from the inner m edge of the latter, a double walled glassvessel having an annular colla-r secured to the neck thereof and havinga plane upper surface for abutting engagement with said first mentionedflange, and a threaded external T5 surface for engagement with saidsecond mentioned flange.

5. A container including a `jacket havingl an inwardly extending annularflange, a glass vessel having a collar secured to the neck gb portionthereof and including an inwardly extending flange for directly engagingthe under surface of said first mentioned flange, a cylindrical partencircling the neck, and threaded connections between said vessel and 2Bsaid jacket for holding said flanges in firm engagement.

6. A container including a jacket having an inwardly extending annularflange, a glass vessel having a collar secured to the neck 8b portionthereof and including an inwardly extending flange for directly engagingthe under Surface of said first mentioned flange, a cylindrical partencircling the neck, and threaded connections between said vessel andsaid jacket for holding said flanges in firm engagement, the internaldiameters of said flanges being substantially equal and alsosubstantially equal to the diameter of the end of the neck of the glassvessel, whereby said end is protected and a substantially smooth innersurface is presented.

7. A container includin an outer jacket having an inwardly extending topflange and a depending internally threaded flange of 4i larger diameter,a double walled glass vessel havin a metal casin presenting an inwardlyexten ing flange at t 1e top thereof cemented to the end of the neck ofthe vessel, a collar secured to said jacket and having a portion "l fordirect abutting engagement with said first mentioned flange, and athreaded part for engaging said second mentioned flange.

8. A container including an outer jacket having an inwardly extendingtop flange and "di a depending internally threaded flange of largerdiameter, a double walls glass vessel havin a metal casing presenting aninwardly exten ing flange at the top thereof cemented to the end of theneck of the vessel, and a bottom part contacting with the centralportion of the bottom of the glass vessel and having an annular beadextending below said portion and spaced from the wall of the glassvessel,

a` collar secured to said casing and having a u portion for directabutting engagement with said first mentioned flange, and a threadedpart for engaging said second mentioned flange.

9. A container including a double walled glass vessel having a convexbottom, and a cup-shaped casing part cemented to the vessel around theperipheral wall and having a concave bottom and a depending annular beadfor holding the bottom above a Supporting surface.

l0. A container including a. double walled glass vessel having a convexbottom and a Sealing off point near one edge thereof, and a cup-shapedcasing part cemented to the vessel around the peripheral wall and havinga concave bottom engaging the bottom of the glass vessel and a dependingannular bead for holding the bottom above a supporting surface andreceiving and protecting said sealing oil' point.

Signed at New York, in the county of New York and State of New York,this 21st day of June, A. D. 1928.

FRITZ SIEGHlClM.

